A packaging film removal device and a lithium battery disassembly production line

Abstract

The present invention discloses a packaging film removing device and a lithium battery disassembly production line, relating to the technical field of lithium battery recycling. The packaging film removing device includes a frame, a rotating mechanism, a rotating table, a driving mechanism, a mounting frame and a heating element. The rotating mechanism is connected to the rotating table, and the rotating table is used for placing the battery cell. The driving mechanism is installed on the frame and connected to the mounting frame. The heating element is installed on the mounting frame. The driving mechanism is used to drive the heating element to move towards the battery cell through the mounting frame to melt the packaging film on the surface of the battery cell, and the driving mechanism is also used to drive the heating element to move away from the battery cell through the mounting frame to make way for the battery cell, so as to facilitate the rotating mechanism to drive the battery cell to rotate through the rotating table. The packaging film removing device provided by the present invention can effectively remove the packaging film outside the battery cell, with high removal efficiency and good removal effect, and will not damage the internal structure of the battery cell, being safe and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery recycling, and more particularly to a packaging film removing device and a lithium battery disassembly production line. Background Art

[0002] At present, with the continuous increase in the sales volume of new energy vehicles, the quantity of retired batteries is about to enter a period of rapid growth. Currently, the general method of recycling batteries is to directly perform a crushing disassembly on lithium batteries, first crushing the positive electrode, negative electrode, separator, and electrolyte together, and then separating them sequentially. This method has low automation, serious pollution, and high disassembly costs. Therefore, it is necessary to develop an automated non-destructive disassembly technology for separating the positive and negative electrodes of batteries. In this disassembly technology, reverse winding disassembly of the battery core is one of the key technical points. To achieve reverse winding disassembly of the battery core, it is necessary to first remove the packaging film outside the battery core.

[0003] In view of this, it is particularly important to design and manufacture a packaging film removing device with good removal effect and a lithium battery disassembly production line, especially in the recycling of lithium batteries. Summary of the Invention

[0004] The purpose of the present invention is to provide a packaging film removing device that can effectively remove the packaging film outside the battery core, has high removal efficiency, good removal effect, and will not damage the internal structure of the battery core, being safe and reliable.

[0005] Another purpose of the present invention is to provide a lithium battery disassembly production line, in which the packaging film removing device can effectively remove the packaging film outside the battery core, has high removal efficiency, good removal effect, and will not damage the internal structure of the battery core, being safe and reliable.

[0006] The present invention is implemented by the following technical solutions.

[0007] A packaging film removing device includes a frame, a rotating mechanism, a rotating table, a driving mechanism, a mounting frame, and a heating element. The rotating mechanism is connected to the rotating table, and the rotating table is used for placing the battery core. The driving mechanism is installed on the frame and is connected to the mounting frame. The heating element is installed on the mounting frame. The driving mechanism is used to drive the heating element to move towards the battery core through the mounting frame to melt the packaging film on the surface of the battery core, and the driving mechanism is also used to drive the heating element to move away from the battery core through the mounting frame to make way for the battery core, facilitating the rotating mechanism to drive the battery core to rotate through the rotating table.

[0008] Optionally, the number of the mounting frame and the heating element is two each. Each heating element is installed on one mounting frame. The battery core is located between the two mounting frames. Both mounting frames are connected to the driving mechanism, and the driving mechanism is used to synchronously drive the two mounting frames to approach or move away from each other.

[0009] Optionally, the packaging film removing device further includes a lifting mechanism and a lifting frame. The lifting mechanism is installed on the frame and connected to the lifting frame. The rotating mechanism is installed on the lifting frame. The lifting mechanism is used to drive the battery cell to rise or fall through the lifting frame, the rotating mechanism and the rotating table.

[0010] Optionally, the packaging film removing device further includes an image sensor. The image sensor is installed on the mounting frame and electrically connected to the lifting mechanism. The image sensor is used to capture the image information of the battery cell and control the lifting mechanism to adjust the height position of the battery cell according to the image information.

[0011] Optionally, the rotating table includes a table body, a first limiting strip, a second limiting strip, a third limiting strip and a fourth limiting strip. The first limiting strip, the second limiting strip, the third limiting strip and the fourth limiting strip are connected end to end and are all connected to the table body. The first limiting strip, the second limiting strip, the third limiting strip and the fourth limiting strip jointly enclose a limiting cavity, and the battery cell is arranged in the limiting cavity.

[0012] Optionally, the packaging film removing device further includes a vacuum pump. The table body is provided with an internal cavity and a through hole communicating with the internal cavity. The vacuum pump is communicated with the internal cavity. The internal cavity is communicated with the limiting cavity through the through hole. The vacuum pump is used to suck air to adsorb the packaging film at the bottom of the battery cell on the table body.

[0013] Optionally, the packaging film removing device further includes a telescopic mechanism and a first vacuum chuck. The telescopic mechanism is installed on the table body and connected to the first vacuum chuck. The first vacuum chuck is communicated with the vacuum pump. The telescopic mechanism is used to drive the first vacuum chuck to approach the battery cell so that the first vacuum chuck adsorbs the packaging film on the side of the battery cell.

[0014] Optionally, the packaging film removing device further includes a first conveyor belt, a second conveyor belt, a conveying mechanism, a conveying frame and a clamping mechanism. The first conveyor belt and the second conveyor belt are both installed on the frame. The rotating table is arranged between the first conveyor belt and the second conveyor belt. The conveying mechanism is installed on the frame and connected to the conveying frame. The clamping mechanism is installed on the conveying frame. The clamping mechanism is used to clamp or release the battery cell. The conveying mechanism is used to send the battery cell from the first conveyor belt to the rotating table through the clamping mechanism, and the conveying mechanism is also used to send the battery cell from the rotating table to the second conveyor belt through the clamping mechanism.

[0015] Optionally, the packaging film removing device further includes a second vacuum chuck. The second vacuum chuck is installed on the conveying frame and communicated with the vacuum pump. The second vacuum chuck is used to adsorb the battery cell.

[0016] A lithium battery disassembly production line includes the above-mentioned packaging film removal device. The packaging film removal device includes a frame, a rotating mechanism, a rotating table, a driving mechanism, a mounting frame, and a heating element. The rotating mechanism is connected to the rotating table, and the rotating table is used for placing the battery cell. The driving mechanism is installed on the frame and is connected to the mounting frame. The heating element is installed on the mounting frame. The driving mechanism is used to drive the heating element to move towards the battery cell through the mounting frame to melt the packaging film on the surface of the battery cell. The driving mechanism is also used to drive the heating element to move away from the battery cell through the mounting frame to make way for the battery cell, so as to facilitate the rotating mechanism to drive the battery cell to rotate through the rotating table.

[0017] The packaging film removal device and the lithium battery disassembly production line provided by the present invention have the following beneficial effects:

[0018] For the packaging film removal device provided by the present invention, the rotating mechanism is connected to the rotating table, the rotating table is used for placing the battery cell, the driving mechanism is installed on the frame and is connected to the mounting frame, the heating element is installed on the mounting frame, the driving mechanism is used to drive the heating element to move towards the battery cell through the mounting frame to melt the packaging film on the surface of the battery cell, and the driving mechanism is also used to drive the heating element to move away from the battery cell through the mounting frame to make way for the battery cell, so as to facilitate the rotating mechanism to drive the battery cell to rotate through the rotating table. Compared with the prior art, since the packaging film removal device provided by the present invention adopts a rotating table connected to the rotating mechanism and a heating element installed on the mounting frame, it can effectively remove the packaging film outside the battery cell, with high removal efficiency, good removal effect, and will not damage the internal structure of the battery cell, being safe and reliable.

[0019] For the lithium battery disassembly production line provided by the present invention, the packaging film removal device therein can effectively remove the packaging film outside the battery cell, with high removal efficiency, good removal effect, and will not damage the internal structure of the battery cell, being safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Is an axonometric view of the packaging film removal device provided by the embodiment of the present invention;

[0022] Figure 2 Is a schematic structural view of the battery cell applied by the packaging film removal device provided by the embodiment of the present invention;

[0023] Figure 3Schematic structural diagram of the lifting mechanism in the packaging film removing device provided by the embodiment of the present invention, connecting with the rotating table through the lifting frame and the rotating mechanism, from one perspective;

[0024] Figure 4 Schematic structural diagram of the lifting mechanism in the packaging film removing device provided by the embodiment of the present invention, connecting with the rotating table through the lifting frame and the rotating mechanism, from another perspective;

[0025] Figure 5 Schematic structural diagram of the rotating table in the packaging film removing device provided by the embodiment of the present invention;

[0026] Figure 6 For Figure 5 Cross-sectional view of the middle table body;

[0027] Figure 7 Schematic structural diagram of the clamping mechanism in the packaging film removing device provided by the embodiment of the present invention.

[0028] Icon: 100 - Packaging film removing device; 110 - Frame; 120 - Rotating mechanism; 130 - Rotating table; 131 - Table body; 132 - First limiting strip; 133 - Second limiting strip; 134 - Third limiting strip; 135 - Fourth limiting strip; 136 - Limiting cavity; 137 - Internal cavity; 138 - Through hole; 140 - Driving mechanism; 150 - Mounting frame; 160 - Electric heating element; 170 - Lifting mechanism; 180 - Lifting frame; 190 - Image sensor; 200 - Vacuum pump; 210 - Telescopic mechanism; 220 - First vacuum chuck; 230 - First conveyor belt; 240 - Second conveyor belt; 250 - Conveying mechanism; 260 - Conveying frame; 270 - Clamping mechanism; 271 - First cylinder; 272 - First clamping block; 273 - Second cylinder; 274 - Second clamping block; 280 - Second vacuum chuck; 300 - Battery cell; 310 - Packaging film; 320 - Top cover; 330 - Plastic part; 340 - Core. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0030] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0031] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the features in the following embodiments can be combined with each other.

[0035] Please refer to Figures 1 to 4 , an embodiment of the present invention provides a lithium battery disassembly production line (not shown in the figure) for disassembling and recycling lithium batteries. The packaging film removing device 100 therein can effectively remove the packaging film 310 outside the battery cell 300, with high removal efficiency, good removal effect, and will not damage the internal structure of the battery cell 300, being safe and reliable.

[0036] It should be noted that the lithium battery disassembly production line includes a packaging film removal device 100 and an unwinding disassembly device (not shown in the figure). The packaging film removal device 100 is connected to the unwinding disassembly device; the packaging film removal device 100 is used to remove the packaging film 310 on the surface of the battery cell 300, facilitating subsequent unwinding disassembly of the battery cell 300; the unwinding disassembly device is used to perform an unwinding operation on the battery cell 300, so that the wound battery cell 300 is restored to a strip shape, facilitating the non-destructive separation of the positive and negative electrodes of the battery cell 300, reducing environmental pollution, and improving the disassembly and recycling efficiency.

[0037] Specifically, the battery cell 300 includes a top cover 320, a plastic part 330, and a winding core 340. One side of the plastic part 330 is connected to the top cover 320, and the other side is connected to the winding core 340 to fix the overall structure of the battery cell 300. Among them, the cross-sectional area of the top cover 320 is larger than that of the plastic part 330, and the cross-sectional area of the plastic part 330 is equal to that of the winding core 340. The packaging film 310 is wrapped outside the plastic part 330 and the winding core 340 to further fix the overall structure of the battery cell 300. Therefore, during the process of removing the packaging film 310 by using the packaging film removal device 100, first, the packaging film 310 is melted along the connection position between the plastic part 330 and the winding core 340, so that the packaging film 310 is divided into upper and lower parts. The upper part of the packaging film 310 is wrapped outside the plastic part 330. The area of this part of the packaging film 310 is small and will not affect the subsequent unwinding disassembly of the winding core 340, so it does not need to be removed. The lower part of the packaging film 310 is wrapped outside the winding core 340; then the lower part of the packaging film 310 is adsorbed and removed to complete the removal of the packaging film 310. After the packaging film 310 is removed, the unwinding disassembly device can be used to perform unwinding disassembly on the winding core 340, thereby realizing the disassembly and recycling of the battery cell 300.

[0038] The packaging film removing device 100 includes a frame 110, a rotating mechanism 120, a rotating table 130, a driving mechanism 140, a mounting frame 150, a heating element 160, a lifting mechanism 170, a lifting frame 180, an image sensor 190, a vacuum pump 200, a telescopic mechanism 210, a first vacuum chuck 220, a first conveyor belt 230, a second conveyor belt 240, a conveying mechanism 250, a conveying frame 260, a clamping mechanism 270, and a second vacuum chuck 280. The rotating mechanism 120 is connected to the rotating table 130. The rotating table 130 is used for placing the battery cell 300, and the rotating mechanism 120 is used to drive the battery cell 300 to rotate through the rotating table 130. The driving mechanism 140 is installed on the frame 110 and is connected to the mounting frame 150. The heating element 160 is installed on the mounting frame 150. The driving mechanism 140 is used to drive the heating element 160 to move towards the battery cell 300 through the mounting frame 150 to melt the packaging film 310 on the surface of the battery cell 300. The driving mechanism 140 is also used to drive the heating element 160 to move away from the battery cell 300 through the mounting frame 150 to make way for the battery cell 300, facilitating the rotating mechanism 120 to drive the battery cell 300 to rotate through the rotating table 130. After the rotating mechanism 120 drives the battery cell 300 to rotate a preset angle through the rotating table 130, the driving mechanism 140 drives the heating element 160 to move towards the battery cell 300 through the mounting frame 150 to melt the packaging film 310. This is repeated until the packaging film 310 is completely melted, facilitating subsequent adsorption and removal of the packaging film 310. The removal efficiency is high, the removal effect is good, and the internal structure of the battery cell 300 will not be damaged, which is safe and reliable.

[0039] It should be noted that the cross-sections of the top cover 320, the plastic part 330, and the core 340 are all rectangular, and the packaging film 310 is in the shape of a hollow rectangle. If the packaging film 310 is to be divided into upper and lower parts, the four sides of the packaging film 310 need to be melted respectively. In this embodiment, the number of the mounting frames 150 and the heating elements 160 is two. Each heating element 160 is installed on one mounting frame 150. The battery cell 300 is located between the two mounting frames 150. Both mounting frames 150 are connected to the driving mechanism 140. The driving mechanism 140 is used to synchronously drive the two mounting frames 150 to approach or move away from each other to achieve melting of the packaging film 310 or making way for the battery cell 300. However, it is not limited to this. In other embodiments, the number of the mounting frames 150 and the heating elements 160 can be one. In this case, the driving mechanism 140 needs to drive the mounting frame 150 and the heating element 160 four times to melt the four sides of the packaging film 310. The number of the mounting frames 150 and the heating elements 160 can also be four. In this case, the driving mechanism 140 drives the mounting frames 150 and the heating elements 160 to move once, and the four sides of the packaging film 310 can be melted simultaneously.

[0040] Specifically, the preset angle is 90 degrees. In the process of the packaging film removal device 100 melting the packaging film 310, the driving mechanism 140 is first used to simultaneously drive the two mounting racks 150 to approach each other. At this time, the two electric heating elements 160 approach each other and respectively melt the two opposite sides of the packaging film 310; after the melting is completed, the driving mechanism 140 is used to simultaneously drive the two mounting racks 150 away from each other to make way for the battery cell 300. At this time, the rotating mechanism 120 drives the battery cell 300 to rotate 90 degrees through the rotating table 130, so that the two sides of the battery cell 300 that have not been melted correspond to the two electric heating elements 160 respectively; then the driving mechanism 140 is used to simultaneously drive the two mounting racks 150 to approach each other. At this time, the two electric heating elements 160 approach each other again and respectively melt the other two opposite sides of the packaging film 310. The melting operation is completed, and the packaging film 310 is divided into two parts, upper and lower parts.

[0041] Furthermore, the position of the electric heating element 160 corresponds to the connection position of the plastic part 330 and the winding core 340 in the battery cell 300, that is, the melting position of the packaging film 310 is located between the plastic part 330 and the winding core 340. The electric heating element 160 melts the packaging film 310 here, which can avoid the electric heating element 160 from causing damage to the internal structure of the battery cell 300 as much as possible, and facilitate the lossless separation of the positive and negative poles of the battery cell 300.

[0042] In this embodiment, the electric heating element 160 is a heating wire in the shape of a wire and is connected to the mounting frame 150 in a straight line. However, the present invention is not limited thereto. In other embodiments, the electric heating element 160 may also be an electric heating cutter in the shape of a cutter. The shape of the electric heating element 160 is not specifically limited.

[0043] It should be noted that the diameter of the heating element 160 ranges from 0.2 mm to 2 mm. A reasonable diameter of the heating element 160 ensures that the heating element 160 does not easily break, thereby preventing damage to the internal structure of the battery cell 300 after the packaging film 310 is melted. In this embodiment, the diameter of the heating element 160 is 1 mm, but this is not limited to this. In other embodiments, the diameter of the heating element 160 can be 0.2 mm or 2 mm. There is no specific limitation on the diameter of the heating element 160.

[0044] Further, the melting point range of the packaging film 310 is 160 degrees Celsius to 180 degrees Celsius. Therefore, the temperature range of the electric heating element 160 is 160 degrees Celsius to 240 degrees Celsius. The reasonable temperature of the electric heating element 160 can quickly and effectively melt the packaging film 310 and prevent the internal structure of the battery cell 300 from catching fire due to excessive temperature. In this embodiment, the temperature of the electric heating element 160 is 180 degrees Celsius. The electric heating element 160 is connected to a temperature controller, and the temperature controller can accurately and reliably regulate the temperature of the electric heating element 160. However, this is not limited thereto. In other embodiments, the temperature of the electric heating element 160 can be 160 degrees Celsius or 240 degrees Celsius, and the specific value of the temperature of the electric heating element 160 is not specifically limited.

[0045] It should be noted that the lifting mechanism 170 is installed on the frame 110 and is connected to the lifting frame 180. The lifting mechanism 170 is used to drive the lifting frame 180 to rise or fall. The rotating mechanism 120 is installed on the lifting frame 180, and the lifting mechanism 170 is used to drive the battery cell 300 to rise or fall through the lifting frame 180, the rotating mechanism 120, and the rotating table 130 to ensure that the connection position between the plastic part 330 and the wound core 340 in the battery cell 300 is aligned with the position of the electric heating element 160, thereby improving the accuracy of melting the packaging film 310.

[0046] Further, the image sensor 190 is installed on the mounting frame 150 and is electrically connected to the lifting mechanism 170. The image sensor 190 is used to capture the image information of the battery cell 300 and control the lifting mechanism 170 to adjust the height position of the battery cell 300 according to the image information, so as to further ensure that the position of the electric heating element 160 is aligned with the connection position between the plastic part 330 and the wound core 340, with a high degree of automation.

[0047] Please refer to Figure 5 and Figure 6 , the rotating table 130 includes a table body 131, a first limiting strip 132, a second limiting strip 133, a third limiting strip 134, and a fourth limiting strip 135. The first limiting strip 132, the second limiting strip 133, the third limiting strip 134, and the fourth limiting strip 135 are connected end to end and are all connected to the table body 131. The first limiting strip 132, the second limiting strip 133, the third limiting strip 134, and the fourth limiting strip 135 together enclose a limiting cavity 136. The battery cell 300 is arranged in the limiting cavity 136. The table body 131 is used to carry the battery cell 300, and the first limiting strip 132, the second limiting strip 133, the third limiting strip 134, and the fourth limiting strip 135 are used to limit the battery cell 300 to prevent the battery cell 300 from displacing relative to the table body 131, ensuring the accuracy and safety of melting the packaging film 310.

[0048] Specifically, the table body 131 is provided with an internal cavity 137 and a through hole 138 communicating with the internal cavity 137. The vacuum pump 200 is communicated with the internal cavity 137. The internal cavity 137 is communicated with the limiting cavity 136 through the through hole 138. The vacuum pump 200 is used for sucking air so as to successively suck the air into the through hole 138 and the internal cavity 137, thereby adsorbing the packaging film 310 at the bottom of the battery cell 300 on the table body 131. In this way, on the one hand, the position of the battery cell 300 can be further fixed before the packaging film 310 is fused, preventing the battery cell 300 from swinging and generating a position deviation when rotating with the rotating table 130. On the other hand, the position of the packaging film 310 can be fixed after the packaging film 310 is fused, so as to facilitate the detachment and removal of the packaging film 310.

[0049] Please continue to refer to Figure 1 and Figure 3 Furthermore, the telescopic mechanism 210 is installed on the table body 131 and connected to the first vacuum chuck 220. The first vacuum chuck 220 is communicated with the vacuum pump 200. The position of the first vacuum chuck 220 corresponds to the position of the core 340. The telescopic mechanism 210 is used to drive the first vacuum chuck 220 to approach the battery cell 300, so that the first vacuum chuck 220 adsorbs the packaging film 310 on the side of the battery cell 300, thereby adsorbing the packaging film 310 on the side of the battery cell 300 on the first vacuum chuck 220. Similarly, the first vacuum chuck 220 can further fix the position of the battery cell 300 before the packaging film 310 is fused, preventing the battery cell 300 from swinging and generating a position deviation when rotating with the rotating table 130. The first vacuum chuck 220 can also fix the position of the packaging film 310 after the packaging film 310 is fused, so as to facilitate the detachment and removal of the packaging film 310.

[0050] In this embodiment, the number of the first vacuum chucks 220 is two. The battery cell 300 is located between the two first vacuum chucks 220. Both of the two first vacuum chucks 220 are connected to the telescopic mechanism 210. The telescopic mechanism 210 is used to synchronously drive the two first vacuum chucks 220 to approach or move away from each other, so as to realize the adsorption of the packaging film 310 or the yielding for the battery cell 300. The two first vacuum chucks 220 act together to simultaneously adsorb the packaging films 310 on the opposite sides of the battery cell 300, further improving the adsorption effect.

[0051] It should be noted that both the first conveyor belt 230 and the second conveyor belt 240 are installed on the frame 110. The rotating table 130 is arranged between the first conveyor belt 230 and the second conveyor belt 240. The first conveyor belt 230 is used to drive the battery cell 300 without the packaging film 310 to feed in, and the second conveyor belt 240 is used to drive the battery cell 300 after the packaging film 310 is removed to discharge. The conveying mechanism 250 is installed on the frame 110 and is connected to the conveying frame 260. The clamping mechanism 270 is installed on the conveying frame 260. The conveying mechanism 250 can drive the clamping mechanism 270 to move through the conveying frame 260. The clamping mechanism 270 is used to clamp or loosen the battery cell 300. Specifically, the conveying mechanism 250 is used to send the battery cell 300 from the first conveyor belt 230 to the rotating table 130 through the clamping mechanism 270 to realize the loading of the battery cell 300, which is convenient for removing the packaging film 310 outside the battery cell 300; the conveying mechanism 250 is also used to send the battery cell 300 from the rotating table 130 to the second conveyor belt 240 through the clamping mechanism 270 to realize the unloading of the battery cell 300, which is convenient for sending the battery cell 300 after the packaging film 310 is removed to the next working station.

[0052] Please refer to Figure 7 , the clamping mechanism 270 includes a first cylinder 271, a first clamping block 272, a second cylinder 273 and a second clamping block 274. The first cylinder 271 and the second cylinder 273 are oppositely arranged on both sides of the battery cell 300 and are both fixedly installed on the conveying frame 260. The first cylinder 271 is connected to the first clamping block 272, and the second cylinder 273 is connected to the second clamping block 274. The first cylinder 271 is used to drive the first clamping block 272 to approach or move away from the second cylinder 273, and the second cylinder 273 is used to drive the second clamping block 274 to approach or move away from the first cylinder 271. The first clamping block 272 and the second clamping block 274 are used to clamp the battery cell 300.

[0053] Specifically, both the first cylinder 271 and the second cylinder 273 are located above the battery cell 300. The first clamping block 272 and the second clamping block 274 extend downward and clamp both sides of the battery cell 300. Since the cross-sectional area of the top cover 320 in the battery cell 300 is larger than the cross-sectional areas of the plastic part 330 and the wound core 340, during the process of the clamping mechanism 270 clamping the battery cell 300, the first clamping block 272 and the second clamping block 274 will only clamp the top cover 320 and will not contact the plastic part 330 and the wound core 340. In this way, after the packaging film 310 is fused, the packaging film 310 is divided into upper and lower parts. The upper part of the packaging film 310 covers the outside of the plastic part 330, and the lower part of the packaging film 310 covers the outside of the wound core 340. At this time, the clamping mechanism 270 clamps the top cover 320, and the lifting mechanism 170 drives the rotating platform 130 and the lower part of the packaging film 310 adsorbed on the rotating platform 130 to descend, so as to extract the battery cell 300 from the lower part of the packaging film 310, completing the removal of the lower part of the packaging film 310, thereby realizing the function of removing the packaging film 310 of the battery cell 300.

[0054] Please continue to refer to Figure 1 In this embodiment, the second vacuum chuck 280 is installed on the conveying rack 260 and is connected to the vacuum pump 200. The second vacuum chuck 280 is used to adsorb the top cover 320 of the battery cell 300 to assist the clamping mechanism 270 in fixing the position of the top cover 320, thereby fixing the position of the entire battery cell 300, facilitating the function of extracting the battery cell 300 from the lower part of the packaging film 310 when the lifting mechanism 170 drives the rotating platform 130 to descend.

[0055] Specifically, when the conveying mechanism 250 sends the battery cell 300 with the packaging film 310 removed through the clamping mechanism 270 and the second vacuum chuck 280 onto the second conveyor belt 240, control the clamping mechanism 270 to release the top cover 320, and control the second vacuum chuck 280 to no longer adsorb the top cover 320, so as to place the battery cell 300 with the packaging film 310 removed on the second conveyor belt 240. The second conveyor belt 240 is used to send this battery cell 300 to the next station.

[0056] In this embodiment, the number of the second vacuum chucks 280 is two. The two second vacuum chucks 280 are arranged side by side and are both installed on the conveying rack 260. The two second vacuum chucks 280 act together to simultaneously adsorb the top cover 320 of the battery cell 300, further improving the adsorption effect.

[0057] In this embodiment, the specific structure of the telescopic mechanism 210 is the same as the specific structure of the clamping mechanism 270, and will not be elaborated here.

[0058] In this embodiment, the driving mechanism 140, the lifting mechanism 170, and the conveying mechanism 250 are all mechanical structures driven by a driving motor through a screw-nut transmission. Among them, a bidirectional screw is used in the driving mechanism 140. The bidirectional screw cooperates with two nuts with opposite helix directions at the same time. One nut is fixedly connected to one mounting bracket 150, and the other nut is fixedly connected to the other mounting bracket 150, so as to realize the function that the driving mechanism 140 synchronously drives the two mounting brackets 150 to move towards or away from each other. However, it is not limited thereto. In other embodiments, the driving mechanism 140, the lifting mechanism 170, and the conveying mechanism 250 can also be pneumatic cylinder structures or hydraulic cylinder structures, and the types of the driving mechanism 140, the lifting mechanism 170, and the conveying mechanism 250 are not specifically limited.

[0059] It should be noted that during the operation of the packaging film removal device 100, first, the first conveyor belt 230 is used to send the battery cell 300 to a preset position; then, the conveying mechanism 250 and the clamping mechanism 270 are used to send the battery cell 300 from the preset position to the rotating table 130; next, the telescopic mechanism 210 is used to drive the two first vacuum suction cups 220 to approach the battery cell 300, and the vacuum pump 200 is used to suck air to form a negative pressure, so as to adsorb the battery cell 300 on the table body 131 and adsorb the battery cell 300 between the two first vacuum suction cups 220; then, the image sensor 190 is used to control the lifting mechanism 170 to adjust the height position of the battery cell 300, so that the connection position between the plastic part 330 and the wound core 340 in the battery cell 300 is aligned with the position of the heating element 160; subsequently, the driving mechanism 140 is used to drive the two mounting brackets 150 to approach each other, so that the two heating elements 160 simultaneously fuse the two opposite side surfaces of the packaging film 310; then, the driving mechanism 140 is used to drive the two mounting brackets 150 to move away from each other, and the rotating mechanism 120 is used to drive the battery cell 300 to rotate 90 degrees through the rotating table 130; then, the driving mechanism 140 is used again to drive the two mounting brackets 150 to approach each other, so that the two heating elements 160 simultaneously fuse the other two opposite side surfaces of the packaging film 310. At this time, the packaging film 310 is divided into upper and lower parts; then, the driving mechanism 140 is used again to drive the two mounting brackets 150 to move away from each other, and the lifting mechanism 170 is used to drive the battery cell 300 to rise, so that the position of the battery cell 300 corresponds to the position of the clamping mechanism 270; then, the clamping mechanism 270 is used to clamp the top cover 320 of the battery cell 300, and the second vacuum suction cup 280 is used to adsorb the top cover 320 of the battery cell 300 to fix the position of the battery cell 300, and the lifting mechanism 170 is used to drive the lower part of the packaging film 310 to descend, so as to extract the battery cell 300 from the lower part of the packaging film 310; then, the conveying mechanism 250 is used to send the battery cell 300 to the second conveyor belt 240 through the clamping mechanism 270 and the second vacuum suction cup 280, control the clamping mechanism 270 to release the top cover 320, and control the second vacuum suction cup 280 to stop adsorbing the top cover 320; finally, the second conveyor belt 240 is used to send the battery cell 300 with the packaging film 310 removed to the next station, and the lower part of the packaging film 310 adsorbed on the rotating table 130 and the first vacuum suction cups 220 is taken away manually or by machinery, completing the removal of the packaging film 310. Repeat this process to achieve the removal of the packaging films 310 of multiple battery cells 300, with high removal efficiency.

[0060] The packaging film removing device 100 provided by an embodiment of the present invention, a rotating mechanism 120 is connected to a rotating table 130, the rotating table 130 is used for placing the power cell 300, a driving mechanism 140 is installed on a frame 110 and is connected to a mounting bracket 150, a heating element 160 is installed on the mounting bracket 150, the driving mechanism 140 is used for driving the heating element 160 to move towards the power cell 300 through the mounting bracket 150 to melt the packaging film 310 on the surface of the power cell 300, and the driving mechanism 140 is further used for driving the heating element 160 to move away from the power cell 300 through the mounting bracket 150 to make way for the power cell 300, so as to facilitate the rotating mechanism 120 to drive the power cell 300 to rotate through the rotating table 130. Compared with the prior art, since the packaging film removing device 100 provided by the present invention adopts the rotating table 130 connected to the rotating mechanism 120 and the heating element 160 installed on the mounting bracket 150, it can effectively remove the packaging film 310 outside the power cell 300, with high removal efficiency and good removal effect, and will not damage the internal structure of the power cell 300, being safe and reliable. The lithium battery disassembly production line has high recovery efficiency and can achieve non-destructive separation of the positive and negative electrodes.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A packaging film removing device, characterized in that, It includes a frame (110), a rotating mechanism (120), a rotating table (130), a driving mechanism (140), a mounting bracket (150) and a heating element (160). The rotating mechanism (120) is connected to the rotating table (130). The rotating table (130) is used for placing an electric core (300). The driving mechanism (140) is installed on the frame (110) and is connected to the mounting bracket (150). The heating element (160) is installed on the mounting bracket (150). The driving mechanism (140) is used to drive the heating element (160) towards the direction close to the electric core (300) through the mounting bracket (150) to fuse the packaging film (310) on the surface of the electric core (300). The driving mechanism (140) is also used to drive the heating element (160) towards the direction away from the electric core (300) through the mounting bracket (150) to make way for the electric core (300), so as to facilitate the rotating mechanism (120) to drive the electric core (300) to rotate through the rotating table (130). The packaging film removing device further includes a lifting mechanism (170) and a lifting frame (180). The lifting mechanism (170) is installed on the frame (110) and is connected to the lifting frame (180). The rotating mechanism (120) is installed on the lifting frame (i80). The lifting mechanism (170) is used to drive the electric core (300) to rise or fall through the lifting frame (180), the rotating mechanism (120) and the rotating table (130). The rotating table (130) includes a table body (131), a first limiting strip (132), a second limiting strip (133), a third limiting strip (134) and a fourth limiting strip (135). The first limiting strip (132), the second limiting strip (133), the third limiting strip (134) and the fourth limiting strip (135) are connected end to end and are all connected to the table body (131). The first limiting strip (132), the second limiting strip (133), the third limiting strip (134) and the fourth limiting strip (135) jointly enclose a limiting cavity (136), and the electric core (300) is arranged in the limiting cavity (136). The packaging film removing device further includes a vacuum pump (200). The table body (131) is provided with an internal cavity (137) and a through hole (138) communicating with the internal cavity (137). The vacuum pump (X00) is communicated with the internal cavity (137). The internal cavity (137) is communicated with the limiting cavity (136) through the through hole (138). The vacuum pump (200) is used to suck air to adsorb the packaging film (310) at the bottom of the electric core (300) on the table body (131). The packaging film removing device further includes a telescopic mechanism (210) and a first vacuum chuck (220). The telescopic mechanism (210) is installed on the table body (131) and connected to the first vacuum chuck (220). The first vacuum chuck (220) is communicated with the vacuum pump (200). The telescopic mechanism (210) is used to drive the first vacuum chuck (220) to approach the battery cell (300) so that the first vacuum chuck (220) adsorbs the packaging film (310) on the side of the battery cell (300). The packaging film removing device further includes a first conveyor belt (230), a second conveyor belt (240), a conveying mechanism (250), a conveying frame (260) and a clamping mechanism (270). The first conveyor belt (230) and the second conveyor belt (240) are both installed on the frame (110). The rotary table (130) is arranged between the first conveyor belt (230) and the second conveyor belt (240). The conveying mechanism (250) is installed on the frame (110) and connected to the conveying frame (260). The clamping mechanism (270) is installed on the conveying frame (260). The clamping mechanism (270) is used to clamp or release the battery cell (300). The conveying mechanism (250) is used to send the battery cell (300) from the first conveyor belt (230) to the rotary table (130) through the clamping mechanism (270). The conveying mechanism (250) is also used to send the battery cell (300) from the rotary table (130) to the second conveyor belt (240) through the clamping mechanism (270). The packaging film removing device further includes a second vacuum chuck (280). The second vacuum chuck (280) is installed on the conveying frame (260) and communicated with the vacuum pump (200). The second vacuum chuck (280) is used to adsorb the battery cell (300).

2. The packaging film removing device according to claim 1, characterized in that The number of the mounting frames (150) and the heating elements (160) is two. Each heating element (160) is installed on one mounting frame (150). The battery cell (300) is located between the two mounting frames (150). The two mounting frames (150) are both connected to the driving mechanism (140). The driving mechanism (140) is used to synchronously drive the two mounting frames (150) to approach or separate from each other.

3. The packaging film removing device according to claim 1, characterized in that, The packaging film removing device further includes an image sensor (190). The image sensor (190) is installed on the mounting frame (150) and electrically connected to the lifting mechanism (170). The image sensor (190) is used to capture the image information of the battery cell (300) and control the lifting mechanism (170) to adjust the height position of the battery cell (300) according to the image information.

4. A lithium battery disassembly production line, characterized in that, Including the packaging film removing device according to any one of claims 1 to 3.

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